1318149 has 30 divisors (see below), whose sum is σ = 2257606. Its totient is φ = 740880.

The previous prime is 1318147. The next prime is 1318157. The reversal of 1318149 is 9418131.

1318149 is nontrivially palindromic in base 4.

It can be written as a sum of positive squares in only one way, i.e., 777924 + 540225 = 882^2 + 735^2 .

It is not a de Polignac number, because 1318149 - 2¹ = 1318147 is a prime.

It is a Duffinian number.

1318149 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318147) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 21579 + ... + 21639.

2^1318149 is an apocalyptic number.

It is an amenable number.

1318149 is a deficient number, since it is larger than the sum of its proper divisors (939457).

1318149 is an frugal number, since it uses more digits than its factorization.

1318149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 71 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 1318149 is about 1148.1067023583. The cubic root of 1318149 is about 109.6448324320.

The spelling of 1318149 in words is "one million, three hundred eighteen thousand, one hundred forty-nine".